Roof and Associated Components: Description and Operation

General Information

Diagnosis
The monitoring of signals by the convertible- top control module enables the system to perform reliable, precise diagnosis. Further, certain additional functions, such as e.g. test of drive links and of input signals can be activated using the Porsche System Tester 2 and their function checked.

The fault memory can be read out and erased with the Porsche System Tester 2. The diagnostic socket is located below the knee guard on the driver's side.







General information

Convertible-top control
Each single step of the opening/closing process is only executed on condition that the preceding step was performed correctly.

If a single step is not confirmed within a given time, the actuation of the drive motor is interrupted.

At the beginning of a process, the limit switch or potentiometer values have a particular configuration, which is examined by the control module.

The control module monitors itself and the connected components. The results are read out via the diagnostic interface.

System Description
For the 996 Cabriolet, a fully automatic convertible- top drive has been developed.

The opening and closing processes are fully automatic.

Pressing the rocker switch or operating the handheld transmitter activates the control module and the preselected motion is executed by the drive elements. (The handheld transmitter function is allocated to the country version and is not possible in some countries.)

Various micro-switches and potentiometers ensure that these processes take place smoothly. When the button is released or the comfort opening/ closing function interrupted using the handheld transmitter, the motion sequence is halted immediately. A reversal of the motion sequence is possible at any time.